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coturn/coturn

STUN/TURN relay · C · see repo

app-only

⭐ NOT OPTIONAL. Roughly a fifth of calls fail without a TURN relay — symmetric NAT and corporate firewalls. Budget the bandwidth: relayed media costs real transfer.

Last push 2026-09-07 · 14389 stars at survey time. github.com/coturn/coturn

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Engineering and regulatory orientation, not legal advice. The FCC obligations named here are real and enforced; confirm your own position with counsel before carrying a single call to a phone number.